+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn

+ Translate
+ Recently Requested

Association of within-tree jack pine budworm feeding patterns with canopy level and within-needle variation of water, nutrient, and monoterpene concentrations



Association of within-tree jack pine budworm feeding patterns with canopy level and within-needle variation of water, nutrient, and monoterpene concentrations



Canadian Journal of Forest Research 28(2): 228-233



The possibility that uneven within-tree feeding patterns by jack pine budworm (Choristoneura pinus pinus Freeman) larvae could be related to underlying variation in host jack pine (Pinus banksiana Lamb.) foliar water, nutrient, and monoterpene contents was considered. Choristoneura pinus pinus feeds disproportionately in the upper portion of the canopy and almost exclusively on the basal portions of needles. Within needles, the distribution of water, several nutrients, and monoterpenes varied significantly between the distal and basal sections. Water, nitrogen, sulfur, manganese, and zinc levels occurred in higher concentrations in the distal section of the needle, which would not be predicted based on C. pinus pinus feeding patterns. Phosphorus, potassium, calcium, iron, and copper were significantly higher in the basal section. Although the latter differences might be predicted based on C. pinus pinus feeding patterns, they were not strong (ranging from 7.8% to 36.4% relative differences, as compared with 10.7%-50.0% relative differences in the former group). By contrast, concentrations of foliar monoterpenes were more strongly associated with known feeding patterns of C. pinuspinus. These relative differences ranged from myrcene (26.8%) to limonene (44.79%). Thus, foliar differences affecting within-needle feeding selection appear more associated with allelochemicals than nutrients or water. In contrast with the within-needle associations between larval feeding and foliar chemistry, no associations between upper and lower canopy foliage were observed. Water, nutrients, and monoterpenes were evenly distributed across the upper and lower canopy locations. Thus, differential feeding between canopy locations cannot be explained by foliar constituents. Rather, it is more likely explained by other environmental factors, such as proximity to and density of reproductive and vegetative shoots.

(PDF emailed within 0-6 h: $19.90)

Accession: 003048404

Download citation: RISBibTeXText

DOI: 10.1139/x97-174



Related references

Relationships among jack pine budworm damage selected tree characteristics and armillaria root rot in jack pine. Canadian Journal of Forest Research 20(11): 1791-1795, 1990

Nature and effects of defoliation of jack and red pine by the jack-pine budworm, Choristoneura pinus Free , and the occurrence of budworm parasites at particular locations within stands and trees. Dissertation Absts 21(11): 3564-3565, 1961

Jack pine budworm biology and management. Proceedings of the Jack Pine Budworm Symposium. Winnipeg, Manitoba. January 24-26, 1995. Canadian Forest Service Northern Forestry Centre Information Report NOR-X: 342 i-vi, 1-158, 1995

Variation in Scots pine needle nutrient concentrations in relation to position in crown and needle age. Suo (Helsinki) 45(2): 47-55, 1994

Tree-mediated interactions between the jack pine budworm and a mountain pine beetle fungal associate. Ecological Entomology 36(4): 425-434, 2011

Seasonal and canopy position variability in leaf level CO-2 and water fluxes in Jack pine and black spruce in Saskatchewan. Bulletin of the Ecological Society of America 76(2 SUPPL PART 2): 258, 1995

Variation in needle nutrient concentrations in the crown of Scots pine on peatland. Silva Fennica 28(1): 41-51, 1994

Feeding and oviposition habits of the jack-pine budworm. Jour Econ in Ent 54(6): 1138-1140, 1961

Ten-year tree mortality following a jack pine budworm outbreak in Saskatchewan. Canadian Journal of Forest Research 28(12): 1784-1793, 1998

Simulation of how jack pine budworm (Lepidoptera: Tortricidae) affects economic returns from jack pine timber production in Michigan. Great Lakes Entomologist 16(4): 157-165, 1983

Effects of nitrogen fertilization on monoterpenes of jack pine seedlings and weight gain of jack pine budworm (Lepidoptera: Torticidae). Great Lakes entomologister 26(2): 137-149, 1993

Long-term effects of jack pine budworm outbreaks on the growth of jack pine trees in Michigan. Canadian journal of forest research 29(10): 1510-1517, 1999

Linkages between the phenologies of jack pine (Pinus banksiana) foliage and jack pine budworm (Lepidoptera: Tortricidae). Great Lakes Entomologist 38(1/2): 58-75, 2005

Effects of nitrogen fertilization of monoterpenes of jack pine seedlings and weight gain of jack pine budworm. Great Lakes Entomologist 26(2): 137-149, 1993

Impact of the 1982-1986 jack pine budworm infestation on jack pine in northeastern Ontario. Canadian Forest Service Information Report O-X 0(431): I-III, V, 1-19, 1994